膨胀法研究铁磁性恒弹性合金

Study on Ferro-magnetic Elinvar Alloy Character by Expansion Method

本文采用膨胀法研究了铁磁性恒弹性合金平均线膨胀系数随时效温度的变化规律。发现在 4 0 0～ 5 0 0℃区间 ,平均线膨胀系数随时效温度的变化很小 ;在 5 0 0～ 70 0℃范围内 ,平均线膨胀系数随时效温度的升高而迅速下降。分析了平均线膨胀系数与频率温度系数和弹性模量温度系数的关系。结果表明 。

The character of ferro magnetic elinvar alloy average coefficient of linear expansion with aging temperature is studied by expansion method It is found that average coefficient of linear expansion is minutly changing with aging temperature from 400℃ to 500℃,but it drops greatly with the increase of aging temperature from 500℃ to 700℃ The relationship between average coefficient of linear expansion,frequency temperature coefficient and Young's modulus temperature coefficient is analysed The results show that the character of elinvar alloy can be qualitatively analysised by expansion method